about summary refs log tree commit diff
path: root/nptl/tst-cond3.c
diff options
context:
space:
mode:
Diffstat (limited to 'nptl/tst-cond3.c')
-rw-r--r--nptl/tst-cond3.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/nptl/tst-cond3.c b/nptl/tst-cond3.c
new file mode 100644
index 0000000000..cb9eb85585
--- /dev/null
+++ b/nptl/tst-cond3.c
@@ -0,0 +1,113 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+/* Note that this test requires more than the standard.  It is
+   required that there are no spurious wakeups if only more readers
+   are added.  This is a reasonable demand.  */
+
+
+static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
+
+
+#define N 10
+
+
+static void *
+tf (void *arg)
+{
+  int i = (long int) arg;
+  int err;
+
+  /* Get the mutex.  */
+  err = pthread_mutex_lock (&mut);
+  if (err != 0)
+    {
+      printf ("child %d mutex_lock failed: %s\n", i, strerror (err));
+      exit (1);
+    }
+
+  /* This call should never return.  */
+  pthread_cond_wait (&cond, &mut);
+
+  /* We should never get here.  */
+  exit (1);
+
+  return NULL;
+}
+
+
+static int
+do_test (void)
+{
+  int err;
+  int i;
+
+  for (i = 0; i < N; ++i)
+    {
+      pthread_t th;
+
+      if (i != 0)
+	{
+	  /* Release the mutex.  */
+	  err = pthread_mutex_unlock (&mut);
+	  if (err != 0)
+	    {
+	      printf ("mutex_unlock %d failed: %s\n", i, strerror (err));
+	      return 1;
+	    }
+	}
+
+      err = pthread_create (&th, NULL, tf, (void *) (long int) i);
+      if (err != 0)
+	{
+	  printf ("create %d failed: %s\n", i, strerror (err));
+	  return 1;
+	}
+
+      /* Get the mutex.  */
+      err = pthread_mutex_lock (&mut);
+      if (err != 0)
+	{
+	  printf ("mutex_lock %d failed: %s\n", i, strerror (err));
+	  return 1;
+	}
+    }
+
+  /* Set an alarm for 1 second.  The wrapper will expect this.  */
+  alarm (1);
+
+  /* This call should never return.  */
+  pthread_cond_wait (&cond, &mut);
+
+  puts ("cond_wait returned");
+  return 1;
+}
+
+
+#define EXPECTED_SIGNAL SIGALRM
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"